Collectible side-gussetted, flat-bottomed flexible pouch



FIG. 1 is a perspective view of the collectible side-gussetted, flat-bottomed flexible pouch showing the design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The portions of the disclosure shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a collectible side-gussetted, flat-bottomed flexible pouch, as shown and described. 